Vladimir 'phcoder' Serbinenko
c30be3b694
Make Reed-Solomon faster by using power of generator representation of
GF(256)*.
* grub-core/lib/reed_solomon.c (grub_uint16_t) [TEST]: Removed.
(gf_double_t): Likewise.
(gf_invert): Removed.
(gf_powx): New array.
(gf_powx_inv): Likewise.
(scratch): Move higher.
(gf_reduce): Removed.
(gf_mul): Use powx.
(gf_invert): Likewise.
(init_inverts): Replaced with ...
(init_powx): ...this. All users updated.
(pol_evaluate): Replace multiplications with additions.
(rs_encode): Likewise.
(gauss_eliminate): Call gf_invert.
(grub_reed_solomon_add_redundancy): Call init_powx.
(grub_reed_solomon_recover): Call init_powx unconditionally.
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